Cab window knocking when fully wound down ?

[aimlessrock]

Hi folks.

The drivers window when wound all the way down rocks from side to side slightly and is banging against the raised metal bracket in the door( see the picture)

Is this a bodge that I have found? - the rail should surely go past this bracket?

Thanks in advance for your help.

https://photobucket.com/share/bf0b0708- ... a5184c4266